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Tool library

Electronic components

Identify, decode and check passive components before adding them to your circuit.

6tools across 4 categories

Each tool combines an interactive calculation with practical reading and verification guidance.

Resistor identification

Decode colour bands and SMD resistor markings.

02
Resistor Colour CodeRead colour bands, tolerance and temperature coefficient.Open toolSMD Resistor CodeDecode 3/4-digit, R/K/M and EIA-96 formats.Open tool

Tolerance & limits

Check a resistor’s real range under operating conditions.

01
Resistor Min/Max CalculatorCombine nominal value, tolerance, TCR and temperature.Open tool

Capacitors

Interpret markings and estimate the capacitance actually available.

02
Capacitor Marking CodeDecode 3-digit, RKM and EIA-198 markings.Open toolCapacitor Derating CurvesVisualise the effects of DC bias and temperature.Open tool

Inductors

Quickly identify the value of colour-banded inductors.

01
Inductor Colour CodeDecode value, multiplier and tolerance.Open tool